音标:[,tetrә'mi:θail,-'meθil] ;
a. [化]四甲基的

AS IT IS 2016-10-01 Report: Smoking May Permanently Damage Genetic Material 报告称吸烟或永久性损伤你的遗传物质 Here is another reason to not light up a cigarette. Smoking can permanently damage your genetic material, according to a n

发表于:2018-12-16 / 阅读(110) / 评论(0) 分类 2016年VOA慢速英语(十)月

This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Saliva contains many useful components: lubricants, enzymes for breaking down food and now compounds that can reveal a persons age. Thats according to a

发表于:2018-12-24 / 阅读(162) / 评论(0) 分类 Scientific American(六)月

This is Scientific American Sixty Seconds Science, I'm Sophie Bushwick, got a minute? When Mexican tetra fish moved into darker caves long ago, they evolved to deal with the dark by becoming albino and going blind. A new research shows that the chang

发表于:2018-12-24 / 阅读(182) / 评论(0) 分类 Scientific American(一)月

Ever get a sour stomach after your morning coffee? Well, you might end up switching to a dark roastbecause that coffee concoction may leave you with a happier tummy. That's according to the research presented at the American Chemical Society meeting

发表于:2018-12-24 / 阅读(164) / 评论(0) 分类 Scientific American(三)月

You may have heard that humans and chimpanzees have something like 96 percent of our DNA in common. So why, then, are diseases like cancer so common in humans but so rare in chimps? If our DNA is nearly identical, shouldnt we be at risk for many of t

发表于:2018-12-28 / 阅读(135) / 评论(0) 分类 初学者听力文摘精选

Stomach Cells Happier with Dark Roast Coffee Ever get a sour stomach after your morning coffee? Well, you might end up switching to a dark roastbecause that coffee concoction may leave you with a happier tummy. That's according to research presented

发表于:2019-01-02 / 阅读(182) / 评论(0) 分类 60秒科学

T Tanshinone IIA 丹参酮IIA Tanshinone I 丹参酮I Tanshinone IIB 丹参酮IIB Taraxasterol 蒲公英甾醇 Taraxerol 蒲公英赛醇 Tauro ursodesoxy cholic acid 牛磺熊去氧胆酸 Taxifolin 花旗

发表于:2019-01-03 / 阅读(155) / 评论(0) 分类 医务英语

M Madasiatic acid 崩大碗酸 Magnoflorine 木兰花碱 Magnolia cortex P.E 厚朴提取物 Magnolol 厚朴酚 Maitake mushroom P.E 灰树花提取物(舞茸提取物) Malonyl Oleanolic acid Hemi

发表于:2019-01-03 / 阅读(170) / 评论(0) 分类 医务英语

AGRICULTURE REPORT - Restrictions on Methyl Bromide By Mario Ritter Broadcast: Tuesday, March 16, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Graphic Image Some chemicals

发表于:2019-01-06 / 阅读(198) / 评论(0) 分类 农业与发展

By Caty Weaver Broadcast: September 12, 2003 This is Bob Doughty with the VOA Special English Environment Report. Scientists in the United States have reported some good news about the 1)ozone in the

发表于:2019-01-11 / 阅读(164) / 评论(0) 分类 VOA2003(下)-环境与健康

Science and Technology Epigenetics and stress Baby blues 科技 外因遗传与压力 新生儿蓝调曲 A mother's stress while she is pregnant can have a long-lasting effect on her children's genes 母亲孕期压力过大会对孩子的基因造成长

发表于:2019-01-26 / 阅读(187) / 评论(0) 分类 经济学人科技系列

Body Clock Provides Clues to Aging 生物钟提供衰老的线索 If youre searching for the fountain of youth, you might find it in your DNA. Thats according to a new study that sheds light on the biological clock ticking in our genomes, why our bod

发表于:2019-01-31 / 阅读(182) / 评论(0) 分类 VOA常速英语2013年(十月)

10 Getting The Lead Out 第十章 把铅撵出去 In the late 1940s, a graduate student at the University of Chicago named Clair Patterson (who was, first name notwithstanding, an Iowa farm boy by origin) was using a new method of lead isotope measur

发表于:2019-02-17 / 阅读(190) / 评论(0) 分类 万物简史
学英语单词
abused
activator appliance
anti-SSA antibody
balancing current transformator
barometric disturbance
bebc
Beckman
Berriatua
block handle
Boldogkovaralja
bowzey
brasa
butterburgers
butylbenzenes
Butāh
carbide feed generator
cartoon physics
Cedar Glen
cellulose acetate phthalate
choristospore
chromium titanium silicon coating
circulation map
closed - end investment company
commercial enquiry agency
declarators
deformability
double-twisting frame
droplock loan
electrophoretic technique
elhs
Eumetazoa
extreme depth
full dose
Fusa
garbures
gift store
Gottschee
grand stand
Group of
Haminoea
holding anchorage
hvdc system pole control
income year
interlocked mode
irregularity of track
Jerome,Saint
Kepteni
Kinosternon
leucauge blanda
liquor amaraniae aromaticus
LOROP
meat market
mental strain
micro-inch
minimum voltage of overhead contact line
mouthbrooders
nectaried
nekomimi
njoku
olfactory tubercle
one-piece box
packed house
parliamentary debate
piped steel
Planting-cord
postmillennialist
principle of adjusting general average
probations
psychopathologic
raido beacon
reeving line bend
ringers
scouting aeroplane
sec-butanol
Sefīd Kūh
self-glorification
semicanalis tubae anditivae
share of trade
shoplifting
Sitkalidak Strait
slow switching channel
somnambulate
spadroon
special bracket
still liquid filler
subjectivities
SV (slide valve)
swallets
swerdloff
televisa
tightening wire
time lag cartridge
tocopherol-dl-alpha
tom yum goong
Trappes
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Unionhall
vegetated
viterbite
water-themes
whole package
wilcockson